package com.george.auth.config;

import com.george.auth.filter.JwtAuthenticationTokenFilter;
import com.george.auth.handler.AuthenticationEntryPointImpl;
import com.george.auth.handler.LogoutSuccessHandlerImpl;
import com.george.auth.service.UserNamePwdServiceImpl;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Lazy;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

import javax.annotation.Resource;

/**
 * @title: AuthorizationConfiguration.java
 * @description:
 * @author: George
 * @date: 2023/6/9 16:52
 */
@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
public class AuthorizationConfiguration extends WebSecurityConfigurerAdapter {

    /**
     * 自定义用户认证逻辑:用户名密码验证
     */
    @Lazy
    @Resource
    private UserNamePwdServiceImpl userNamePwdService;


    /**
     * 认证失败处理类
     */
    @Resource
    private AuthenticationEntryPointImpl authenticationEntryPoint;

    /**
     * 退出处理类
     */
    @Resource
    private LogoutSuccessHandlerImpl logoutSuccessHandler;

    /**
     * token认证过滤器
     */
    @Resource
    private JwtAuthenticationTokenFilter jwtAuthenticationTokenFilter;

    /**
     * 接口白名单
     */
    @Value("${sys.security.ignoreUrl:/auth/login}")
    private String ignoreUrl;


    /**
     * 解决 无法直接注入 AuthenticationManager
     *
     * @return
     * @throws Exception
     */
    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }

    /**
     * anyRequest          |   匹配所有请求路径
     * access              |   SpringEl表达式结果为true时可以访问
     * anonymous           |   匿名可以访问,不允许已登入用户访问
     * denyAll             |   用户不能访问
     * fullyAuthenticated  |   用户完全认证可以访问（非remember-me下自动登录）
     * hasAnyAuthority     |   如果有参数，参数表示权限，则其中任何一个权限可以访问
     * hasAnyRole          |   如果有参数，参数表示角色，则其中任何一个角色可以访问
     * hasAuthority        |   如果有参数，参数表示权限，则其权限可以访问
     * hasIpAddress        |   如果有参数，参数表示IP地址，如果用户IP和参数匹配，则可以访问
     * hasRole             |   如果有参数，参数表示角色，则其角色可以访问
     * permitAll           |   用户可以任意访问
     * rememberMe          |   允许通过remember-me登录的用户访问
     * authenticated       |   用户登录后可访问
     */
    @Override
    protected void configure(HttpSecurity httpSecurity) throws Exception {
        httpSecurity
                // CSRF禁用，因为不使用session
                .csrf().disable()
                // 认证失败处理类
                .exceptionHandling().authenticationEntryPoint(authenticationEntryPoint).and()
                // 基于token，所以不需要session
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and()
                // 过滤请求
                .authorizeRequests()
                // 对于登录login、swagger请求允许任意访问
                .antMatchers("/swagger-ui.html", "/v3/api-docs", "/swagger-resources", "/webjars/**", "/doc.html").permitAll()
                .antMatchers(ignoreUrl.split(",")).permitAll()
                // 除上面外的请求，其他请求全部需要鉴权认证
                .antMatchers("/**").authenticated()
                // 其余请求允许任意访问
                .anyRequest().permitAll()
                .and()
                .headers().frameOptions().disable();
        //配置登录退出路径
        httpSecurity.logout().logoutUrl("/login/logout").logoutSuccessHandler(logoutSuccessHandler);
        // 添加JWT filter
        httpSecurity.addFilterBefore(jwtAuthenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
        httpSecurity.addFilterBefore(jwtAuthenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
        //开启跨域允许
        httpSecurity.cors();
    }


    /**
     * 强散列哈希加密实现
     */
    @Bean
    public BCryptPasswordEncoder bCryptPasswordEncoder() {
        return new BCryptPasswordEncoder();
    }

    /**
     * 身份认证接口
     */
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        //用户名密码身份认证
        auth.authenticationProvider(daoAuthenticationProvider());
    }

    /**
     * 用户名密码身份认证
     *
     * @param
     * @author :George
     * @date : 2022/4/2 11:24
     * @return: org.springframework.security.authentication.dao.DaoAuthenticationProvider
     */
    @Bean
    public DaoAuthenticationProvider daoAuthenticationProvider() {
        //这里可以使用自带的用户命名认证provider
        DaoAuthenticationProvider provider = new DaoAuthenticationProvider();
        // 设置userDetailsService
        provider.setUserDetailsService(userNamePwdService);
        // 禁止隐藏用户未找到异常
        provider.setHideUserNotFoundExceptions(false);
        // 使用BCrypt进行密码的hash
        provider.setPasswordEncoder(bCryptPasswordEncoder());
        return provider;
    }
}

